Anyone look at an XJ cherokee rear end for a BBP conversion?

ZJ Grand Cherokees are too wide- if it looked spindly you've got to make sure you're looking at an 8 1/4 and not the Dana (35-44, don't recall which offhand) that was also used. If it had an aluminum center, it was a Dana- and yeah, I've seen a few of those get scattered behind a warmed-up smallblock... What is useable on the early (5x4.5 bc) GCs is the optional rear disc brakes, which bolt on to 8.25s without too much fuss.
Have heard differing information on the YJ (Wrangler) suitability also, so I am not sure on the viability of that rear end.